Energy Storage

Energy storage captures energy for later use, crucial for renewable integration. [source: IEA, 2023]
Lithium-ion batteries: 85-95% efficiency, 2,000-10,000 cycles, ~$130-150/kWh (2023). [source: BloombergNEF, 2023]
Pumped Hydro Storage (PHS): 70-85% efficiency, 50+ years life, large-scale, mature. [source: US DOE, 2021]
Flow Batteries: 60-85% efficiency, 10,000+ cycles, long-duration, decoupled power/energy. [source: IRENA, 2020]
India's PLI scheme for ACC batteries targets 50 GWh manufacturing capacity. [source: PIB, 2021]
NITI Aayog projects 27 GW/108 GWh grid storage by 2030 for India. [source: NITI Aayog, 2022]
Round-trip efficiency (RTE): Energy out / Energy in (%).
Cycle life: Number of charge-discharge cycles before degradation.
Sodium-ion batteries: Emerging, abundant materials, lower cost potential. [source: IRENA, 2023]
Thermal storage (molten salt): High efficiency for heat, integrated with CSP. [source: NREL, 2020]
Hydrogen storage: Long-duration potential, but low Power-to-Gas-to-Power efficiency (25-45%). [source: IEA, 2019]
Grid firming: Stabilizing intermittent renewable output.
Peak shaving: Reducing grid demand during high-cost periods.

Vyyuha Quick Recall: STORAGE S - Solar integration: Essential for managing the intermittency of solar power, ensuring continuous supply. T - Thermal systems: Technologies like molten salt and phase-change materials for storing heat, often with CSP plants.

O - Operational efficiency: Measured by round-trip efficiency and cycle life, crucial for economic viability. R - Renewable backup: Provides reliable power when solar and wind generation are low, firming up the grid.

A - Advanced batteries: Encompasses Li-ion, Flow, Sodium-ion, and Solid-state, each with unique characteristics. G - Grid stability: Storage provides ancillary services like frequency regulation and voltage support, preventing blackouts.

E - Economic viability: Driven by declining costs, government incentives (PLI), and market mechanisms.